From: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Date: Wed, 11 Mar 2009 21:07:00 +0000 (+0530)
Subject: x86: cpu_debug add write support for MSRs
X-Git-Tag: v2.6.30-rc3~72^2~26^2~1^5
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=91219bcbdcccc1686b0ecce09e28825c93619c07;p=pandora-kernel.git

x86: cpu_debug add write support for MSRs

Supported write flag for registers.
currently write is enabled only for PMC MSR.

[root@ht]# cat /sys/kernel/debug/x86/cpu/cpu1/pmc/0x300/value
0x0

[root@ht]# echo 1234 > /sys/kernel/debug/x86/cpu/cpu1/pmc/0x300/value
[root@ht]# cat /sys/kernel/debug/x86/cpu/cpu1/pmc/0x300/value
0x4d2

[root@ht]# echo 0x1234 > /sys/kernel/debug/x86/cpu/cpu1/pmc/0x300/value
[root@ht]# cat /sys/kernel/debug/x86/cpu/cpu1/pmc/0x300/value
0x1234

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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